Phonograph-reproducer.



.0. N. MULLER. PHONOGRAPH nernonucen; APPLICATION FILED OCT. 2. I916.

Patented Mar. 11,1919.

yzeaassa.

ATEENT anion.

CARL 1c, iYIbLL'ER, oF N-Ew YORK, N. Y.

. rrso'noe'i tarmnn-enonvem.

m sses:

To all whom it ma cojr'zeernr citizen ofithe'; United S t, tes,resitlingin the; city :Of New Yorleiborough o fIManhattan, ounty andStat-e, ofQN'eu York, have in vented-"a lc-eij taiirgl leiv and usefulfl fhono onrecords either-of, the hill and-dale or lateral cut typej."

Speaking:generally; the salient feature of the invention" OiiS lSfiSiIi'an amplifier cooperating .Wltli .t whereby the niove nentsof the stylusbar air materially *ainpIifiedj prior 'to their-transinission: to thediaphragm, thereby increas--' ing" the degree oil-vibration of saiddiaphragm;

IFIQDI a morespecirie standpoint, the in-' vention may be said toconsist inan ainpli-r' tying: connection. intermediate the thediaphragm; vhereby a relatively short travel of said end: of, the stylusbar is'trans lated .intoarelati ely greater movement of the diaphragini,In other vordsgthe present vibrations received at said end ofthe'st usbar. are transmitted to the diaphragm.-

gas

invention embodies means, positioned inter-,'

mediate the diaphragm operating end of the stylus bar and.thed1aphragni, ivhereby the through said means which amplifies suchvibrations and delivers them :to the diaphragin in their thus amplifiedcondition.

A. further feature of the invention resides inth mountingof the stylusbar tor uni- .versal pivotal inoveinent whereby the vibra tionptjffsaidst \-*'lus. ,l5ar under the-influenceof either; lateral cut or hillanddale-records is ..;nton1atically. provided for. said universalnannection performing the further function of compensating for the inovenients ofthe ainplifving means; Y

Features. of the invention, other than those specified, \'ill beapparent from the li'ereinafteu detailed -d'esfi'iption taken inspecification of Letters Patent.

"line 3 3 of'fFig.- 1..

-'iv h ich diaphragni isoperated upon by a diaphragin operating end ofthe stylus-bar and Patented M r, 1 1 .1 919.-

mhcationfikd wa 7.1916. 1 Serial No. 124 4 but; the construction showntherein is: to be Figure 1 is'a plan view. of a" reproducei"embodyingth'e present invention.

Fig, israside elevation-thereof, and Fig- 3 .is"- a'-transverse section'taken on Referring to the 'draiving,'-A indicates any Well knownorsuitablef'orin of sound box provided with the. usual diaphragm, B,

stylus bar .for the purpose of translating the indvenientsofthe stylusinto sounds cor.-

responding to the undulations of a record. C.cles1gna'te's :a stylus bar=\vhich 'in ac coi-dance \vitlr-the present invention, is pref-Z ei'ablymounted for universal 'nioveinent on liaphragni and stylus bar,

a post d at onerside of the s'ound'box.v Any suitable form, of universalconnect on .may

be .e nployed butgin that illustrated, the up per end of. the ,postf'isrounded over and upon such end re'ststhestylus bain Said (P at its lowerend,. t'0r tightly binding the stylus bar between the upper end of thepost and the headd of the bolt Head (Z is in the shape of sphere or.ball, and the upper. face of thest'ylus bar isprovided with an arcuateseatdtof correspondingradius, so

that ball (Z and seat (Z form, in effect, a

balland socket joint. The hole through the stylus bar is of greaterdiameter than bolt (1' so thatuniversal pivotal movement of the stylusbar, is'niade possible. To preclude a inetallic sound due to thevibration of the stylus bar-against adjacent metallic surfaces,cushioning washers (Z? are positioned at either side ofthe stylus bar,as shown in Fig. 3.

V The upper end of the stylus bar is provided With the usual seat-for astylus C;

which is locked ,in place by the 'usual thumb screw.

"In accordance with this invention, the diaphragni operating end of thestylus bar, instead of being secured directly to the diaphragm', as hasliere'toforc been' the case, co-

operates with certain amplifying means which receives the vibrationsfrom said end :of the stylus bar and transmits them in en la'rged formto the diaphragn'i. In the spe- -.ci'fic form of the inventionillustrated. this i 111021115PllllJOdlOfi a d sk Ii which is mounted,

by means of trunnions e, on a bifurcated supportlng arm 6 fixed to thesound box, as

shown in Fig. 2, or in any other suitable way, so as to reach upwardlyand over'the face of the sound. box andcarry the disk E at its'free.end. Secured substantially at the circumference of said-disk, andsubstantially tan-' gential therewith, is a pin f, which is fixed at itsoppbsite end to diaphragm B. Disk E is preferably pivoted to itssupporting arm 0'; off center, so that the disk will be perfectlybalanced and will not exert any pull or pressure on the diaphragm, butwill allow the same to normally assume its neutral plane condition. 1The stylus bar extends from-its pivot on the post cl and hasitsdiaphragm operating end 0 fixedly secured to disk E as shown in Figs. 2and 3, intermediate the outer circumference of said disk and the axis onwhich it is pivoted' It willthus be [apparent that the radial distancebetween the axis. of disk E and its point of attachment to thetangential pin f of the difi'erence in radial distancereferred to. Itwill thus be apparent that themovements of the, end c of the stylus bar,in their transmission through disk E to pin f,- will be greatlyincreased and will be im{ parted from the disk'to the diaphragm in agreatly amplified condition over that in which they. were received bythe disk.

In order that the reproducer of this'invention may be adapted to executerecords 'ofeither the lateral or vertical cut type, the

connection between the end 0 of the stylus bar and disk E is sopositioned that a perpendicular extended from the diaphragm,

through theaxis offoscillation of disk E,

, will not pass through said connection, nor

Willa line extending through said axis and parallel with the diaphragmintersect said connection. With such construction, the sty- 1 ing in erendicular relation to the "dialus bar will transmit-an oscillatorymovement to the disk, either when-said bar is vi brati-ng'in aplaneperpendicular to the diam phragm or in a planeparallel thereto, as therecan be .no pointof dead centers either in the perpendicularorgparallelplanes referred to. When-the stylus'bar is vibratphragm, itwilltinanifestly, cause the disk to oscillate in'synchronism with thevibra-- tions, as will also be the case when said stylus baris vibratingin substantially par allel relation to the diaphragmb In either Iinstance, the universal pivotal mountingofv the stylus bar allows offree ,movement of said bar' either direction and precludes other, withbinding between the difi'erent elements'of the mechanism.

' Thus, as the stylus travels over the record,

said record imparts to the stylusbar vibra-' tions, eitherperpendicularto the diaphragm ance with the type of record, be, it either verticalorlateral cut, and said'vibrations received at the end a of the 'stylusbar are transmitted on the lesser radius, through disk E, to the.diaphragm through.the greater radius, thereby increasing the amplitudeof '70. or substantially parallel thereto, in accordsuch vibrations. Thediaphragm will thus bevibrated'toa greater extent than it would i ifthe. diaphragm operating end of the stylus bar were, connected;directly.. 1td the 'diaphr'agm,fas has heretofore been the case.

In the foregoing descripti I have Set i plifying "means as embodyingab'alanced .disk. It will be understood, however, that,

if desired, I may employ a lever connection forth the invention in itspreferred prac- I tical form, show1ng and describing the am-.

which. may beeither'balanced o'r not,"'an.d,..*

moreover, while it is preferred .to balance the disk by pivoting it offcenter, as do scribed, yery good results may be obtained by pivoting 1tcentrally so that'it is not absolutely balanced. For these reasons, itis' to be understood that the invention is-not" restricted to thespecific details shown' and described,'but that itis as broadly novel asis commensurate with the 'appendedclaims.

The deviceof the resent 'inventi'on has,

moreover,"- been speci cally described in its manifest, from theforegoing description, however, that the'princlples involved may be a'ailedo of in recorder construction. In

such construction, the principle of the unequal leverage due to unequalradii may be employed elther in the specific manner shown in thedrawing, or-theconnections may be reversed so that the distance betweenthe aXis of oscillation of .the amplifying member and the connectionthereof stylus bar is of greater radius than th with e" '100 embodimentin a reproducer. It will be nec-tion between-the amplifying member andthe diaphragm; This means merely areversal m the connections so thatthevibrat-ioiisof the diaphragm will-be enlarged in their transmissionto the stylus bar (recorderecorder.

manifest from the foregoing at, when the vibrations are om one vibratingpart to the ing bar) 0 It wil part necessarily yibrates at a greaterspeed.

Moreover, when the vibratio'ns of one. of."

the parts are transmitted to-the other part eased magnitude, saidlatterj l w d c as d m g the: part to which .jj' the v1brat1ons aretransmitted movg at :1

lesser speed.-

. When theifstructure of "thi s invention used as a reproducer,- it maybe menses box is positioned edgewise with relation to therecord, asinthe Path machine, or in 7 thereon, and a stylus barpi-votally 15 idisk serving to niacliines wherein the sound box is in sidewise relationto the record, as is the case with the Victor machine. Having thus fullydescribed the invention, what I claim 1. In a device of the classdescribed, the combination of a soundbox embodying a diaphragn'i,amounting for a disk carried by said sound box, a disk pivotally mountedmounted on a sound box, and secured at one end to the pivoted diskrelatively close tothe ofsaid disk, and in operative connectionbetween'the diaphragm and the dislnsaid con nection cooperating with thedisk at a greater distance from its axis than the point whereat thestylus bar is associated with said disk, whereby the vibrations of thestylus bar are transmitted through the disk to the diaphragm in anamplified manner, said steady the operations of the stylus bar. r

2. In a device of the class described, the

1 combination of a sound box embodyin a .iaph *agin, a mounting for adisk carried by said sound box, a disk pivoted for oscillation thereon,a stylus bar-inountedfor universal pivotal movement on the sound box,and having one of its ends-secured to the disk as new, and desire tosecure by Letters Patent, is:

exterior of the point of pivoting thereof,

whereby the vibrations of the stylus bar. in

planes either perpendicular to the diaphragm or parallel, result in theoscillation of the disk, and an operative connection between thedisk andthe diaphragm for the purpose of translatingthe. oscillations of thedisk into vibrations of the diaphragm.

In a device of the class described. the

'conibinat-ionof a sound box embodyin g a diaphragm), a mounting for adisk carried by said sound box, a disk pivoted for oscillation thereon,a stylus bar mounted for uni versal pivotal movement on the sound box,and having one of its ends secured to the disk exterior of the point ofpivoting thereof, whereby the vibrations of .the stylus bar, in.plancseither perpendicular to the dia p'hragm or parallel, result inthe oscillation of the disk, and an operative connection between thediskand the diaphragm for the purpose of translating the oscillations ofthe disk into vibrations of the diaphragm, the connections between thedisk and the dim phragm cooperating with the disk at a greater distancevfrom the .axis thereof. than the point at 'Which the stylus bar issecured to said diskior the purpose of amplifying the vibrations of thestylus bar -durin, their transmission to the diaphragm.

In testimony whereof I havesigncd my name to this specification.

CARL N. MoLLEn.

